package com.mzj.eagle.jobs.config.emq;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttTopic;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;


@Configuration
public class EmqConfig {
	
	private final Logger LOG = LoggerFactory.getLogger(getClass());

	@Value("${emq.host}")
	private String emqHost;
	
	@Value("${emq.topic}")
	private String emqTopic;
	
	@Value("${emq.clientid}")
	private String emqClientId;
	
	@Value("${emq.userName}")
	private String emqUserName;
	
	@Value("${emq.passWord}")
	private String emqPassWord;
	
	@Value("${scale.heartbeat.routing.key}")
	private String mqTopic;
	
	@Bean(name = "emqClient")
	public MqttClient getClient() {
		try {
			LOG.info("============> emq host:"+this.emqHost);
			// host为主机名，test为clientid即连接MQTT的客户端ID，一般以客户端唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
			MqttClient client = new MqttClient(emqHost, emqClientId, new MemoryPersistence());
			// MQTT的连接设置
			MqttConnectOptions options = new MqttConnectOptions();
			// 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
			options.setCleanSession(false);
			// 设置连接的用户名
			options.setUserName(emqUserName);
			// 设置连接的密码
			options.setPassword(emqPassWord.toCharArray());
			// 设置超时时间 单位为秒
			options.setConnectionTimeout(10);
			// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
			options.setKeepAliveInterval(20);
			// 设置回调
			client.setCallback(new PushCallback(this.mqTopic));
			//MqttTopic topic = client.getTopic(emqTopic);
			//setWill方法，如果项目中需要知道客户端是否掉线可以调用该方法。设置最终端口的通知消息  
			//options.setWill(topic, "close".getBytes(), 0, true);
			client.connect(options);

			String topicSt = getDetail(emqTopic);
			if(StringUtils.isEmpty(topicSt)) {
				return null;
			}
			String[] tipics = topicSt.split("\\|");
			String[] realTopics = new String[tipics.length];
			for(int i=0;i<tipics.length;i++) {
				String tipic = tipics[i];
				realTopics[i] = emqTopic.replace(getReplaceSt(emqTopic), tipic);
			}
			//订阅消息
			int[] Qos  = new int[tipics.length];
			for(int i=0;i<tipics.length;i++) {
				Qos[i] = 1;
			}
			client.subscribe(realTopics, Qos);
			return client;
		} catch (Exception e) {
			LOG.error("EMQ connect failed:"+e.getMessage(),e);
			return null;
		}
	}
	
	private String getReplaceSt(String topic) {
		 Pattern pattern = Pattern.compile("\\%\\{(.*?)\\}");// 匹配的模式    
	     Matcher m = pattern.matcher(topic);    
	     while(m.find()){    
	         return (m.group(0));   
	     }
	     return null;
	}
	private String getDetail(String topic) {
		 Pattern pattern = Pattern.compile("\\%\\{(.*?)\\}");// 匹配的模式    
	     Matcher m = pattern.matcher(topic);    
	     while(m.find()){    
	         return (m.group(1));   
	     }
	     return null;
	}
}
